Troubleshooting guide
Fault
Gas mode
Boiler does not operate after
switching on
After switching on, boiler does
not operate and red LED comes
on after about 30 sec.
After a long period of operation,
boiler switches to Fault and
red LED comes on.
Electrical mode (BGE 10)
Boiler does not operate after
switching on
Water supply
Water dripping from safety/
drain valve
Warm water coming out of cold
water tap
If these actions do not remedy the problem, please contact Truma Service.
12
Cause
– No 12 V
power supply
– Window open
– Cowl cover is fitted
– No gas supply
– Incorrect gas pressure
– Air in gas supply
– Overtemperature sensor
has activated
– No 230 V power supply
– Overtemperature sensor
has activated
– Heats up too slowly
with switch set to 850 W
– Water pressure too high
– Hot water flowing
back into cold water supply
Remedy
– Check battery voltage (min. operating voltage 10.5 V)
– Check boiler fuse
(see Maintenance, "Fuses").
– Close window above cowl.
– Remove cowl cover and/or check for soiling and remove
if necessary.
– Check gas valves and cylinder.
– Check gas valves and cylinder.
– To clear the fault (and bleed off air), switch device off,
wait for 5 minutes and switch on again.
– Check the water content, topping up if necessary (close
drain valve).
– To release, switch device off, wait for 5 minutes and
switch on again.
– Connect vehicle to the local central power supply and/or
check residual current protective device.
– Check the water content, topping up if necessary (close
drain valve).
– The electric heating element is fitted with an overtemper-
ature sensor. In the event of a fault, switch off at the con-
trol panel, wait for 10 minutes, then switch on again.
– Please contact Truma Service.
– Check water pressure (max. 2.8 bar) When connecting to
a central water supply a pressure reducer must be used.
– Fit a non-return valve to the cold water supply
(see Installation Instructions, "Water Connection").